/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.seatunnel.api.table.event.handler;

import org.apache.seatunnel.api.table.event.SchemaChangeEvent;
import org.apache.seatunnel.api.table.type.SeaTunnelRowType;

public interface DataTypeChangeEventHandler extends SchemaChangeEventHandler<SeaTunnelRowType> {

    SeaTunnelRowType get();

    DataTypeChangeEventHandler reset(SeaTunnelRowType dataType);

    default SeaTunnelRowType handle(SchemaChangeEvent event) {
        if (get() == null) {
            throw new IllegalStateException("DataTypeChanger not reset");
        }

        try {
            return apply(event);
        } finally {
            reset(null);
            if (get() != null) {
                throw new IllegalStateException("DataTypeChanger not reset");
            }
        }
    }

    SeaTunnelRowType apply(SchemaChangeEvent event);
}
